SOLUTION: The weight of a circular rod of a certain type is proportional to its length. A 15-foot circular rod of this type weighs 35 pounds. What is the weight, in pounds of a 21-foot circu

Question 1070385: The weight of a circular rod of a certain type is proportional to its length. A 15-foot circular rod of this type weighs 35 pounds. What is the weight, in pounds of a 21-foot circular rod of this type?
A.) 41
B.) 44
C.) 47
D.) 49
E.) 56
*
I tried to read through this one one to solve it but I think the wording confused me when I tried to, please and thank you for the help!
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
15 is to 35 as
21 is to ---
feet is to pounds proportion
15/21=35/x
cross-multiply 15x=735
x=49 pounds.
D.
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